Type Ia Supernovae Supernova Remnants SN 1987A Neutron Stars Core-Collapse Supernovae Observations Cassiopeia A Implications Black Holes Gamma Rays Light Curves Star Evolution Cosmic Radiation Stellar Evolution Remnants Type Ia Supernova Superluminous Supernovae Crab Nebula Transients Distance of Supernovae Vela Supernova Remnant Cas A Supernova Research Odd Radio Circles Type Iax Supernovae Type Iax Supernova Explosions Type 1a Supernova Type II Supernova Detection Techniques Chemical Elements Ionization JWST Observations Supernova 1987a Red Supergiant Supernova Star Explosions Hydrogen-burning Supernova Star Collapse White Dwarfs Type-II Supernovae Cosmic Rays White dwarfs High-Redshift Supernovae Ancient Supernovae Detection Methods James Webb Space Telescope Type II Supernovae Supernova Events